# US 11,908,333 B2 · Procedure of determining aircraft position and arrangement for carrying out the procedure > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,908,333 B2 - Document ID: US11908333B2 - Status: Granted - Kind: B2 - Application number: 17/292,838 - Filed: 2018-12-20 - Published: 2021-12-23 - Granted: 2024-02-20 - Earliest claimed: 2018-11-16 - Assignees: Hungarocontrol Zrt. - Applicants: Hungarocontrol Zrt. - Inventors: Gyorgy Blazsovszky - Web page: https://patentgrep.com/patent/US11908333B2 ## CPC - G01S 5/10: Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements {, e.g. omega or decca systems}(G01S5/12 takes precedence {; beacons and receivers cooperating therewith G01S1/306, G01S1/308}) - G08G 5/34: for flight plan modification - G08G 5/25: Transmission of traffic-related information between aircraft - G08G 5/32: for flight plan preparation - H04W 4/029: Location-based management or tracking services - H04W 8/183: {Processing at user equipment or user record carrier} - G08G 5/26: Transmission of traffic-related information between aircraft and ground stations - H04W 4/42: for mass transport vehicles, e.g. buses, trains or aircraft - H04W 84/06: Airborne or Satellite Networks (space-based or airborne stations H04B7/185) - G01S: RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES - G08G: TRAFFIC CONTROL SYSTEMS (guiding railway traffic, ensuring the safety of railway traffic B61L; arrangement of road signs or traffic signals E01F9/00; radar or analogous systems, sonar systems, lidar systems specially adapted for traffic control G01S13/91, G01S15/88, G01S17/88; {radar or analogous systems, sonar systems, lidar systems specially adapted for anti-collision purposes G01S13/93, G01S15/93, G01S17/93}) - H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72) ## Abstract A procedure for a positioning of an aircraft is provided. An airspace user initiates using of a service provided by an air traffic manager and sends identifying data to the air traffic manager, the air traffic manager registers an aircraft identifier, carries out a standalone positioning. As the aircraft identifier, an International Mobile Subscriber Identity (IMSI) number of a code card connected to a switched on on-board device and placed on board the aircraft is used, the airspace user logs in to a cellular network contracted by the air traffic manager, time stamps emitted by at least three cellular base stations are recorded, then observed time difference of arrival data proportionate to a distance from the at least three cellular base stations are calculated, the observed time difference of the arrival data are sent through the cellular network to a location based server. ## Claims ### Claim 1 A method for a positioning of an aircraft, wherein an airspace user initiates using of a service provided by an air navigation service provider and sends identifying data to the air navigation service provider, the air navigation service provider registers an aircraft identifier, carries out a positioning the method, comprising: as the aircraft identifier, using an International Mobile Subscriber Identity (IMSI) number of a code card connected to a switched on on-board device and placed on board the aircraft, wherein the airspace user registers in to a cellular network contracted by the air navigation service provider, recording time stamps emitted by at least three cellular base stations using an observed time difference of arrival (OTDOA) feature from a mobile operator, calculating an observed time difference of arrival data proportionate to a distance from the at least three cellular base stations, sending the observed time difference of the arrival data through the cellular network to a location based server, and via the location based server to an air traffic management system, coupling and comparing in real time the observed time difference of the arrival data with observed time difference of arrival from at least two further positioning data, identifying any outlier and/or corrupt positioning data, wherein the location based server and/or the air traffic management system determines a validated position of the aircraft, creating validated position vector data, sending the validated position vector data to the aircraft to inform the aircraft about a real time position of the aircraft, and forwarding the validated position vector data into at least one database accessible to multiple airspace users, wherein the at least two further positioning data is at least one of satellite positioning data, surveillance data and flight plan data. ### Claim 2 (depends on 1) The method according to claim 1, wherein the flight plan data and/or the satellite positioning data are sent through the cellular network to the location based server and to the air traffic management system via the location based server. ### Claim 3 (depends on 2) The method according to claim 2, wherein the validated position vector data sent to the aircraft is stored and displayed, with the switched on on-board device. ### Claim 4 (depends on 2) The method according to claim 2, wherein the validated position vector data are stored in the at least one database as coupled to the aircraft. ### Claim 5 (depends on 1) The method according to claim 1, wherein the validated position vector data sent to the aircraft is stored and displayed, with the switched on on-board device. ### Claim 6 (depends on 5) The method according to claim 5, wherein the validated position vector data are stored in the at least one database as coupled to the aircraft. ### Claim 7 (depends on 1) The method according to claim 1, wherein the validated position vector data are stored in the at least one database as coupled to the aircraft. ### Claim 8 (depends on 7) The method according to claim 7, wherein the observed time difference of the arrival data and the flight plan data and/or the satellite positioning data are compared by the location based server and/or the air traffic management system and in case of discrepancy, inaccurate data is indicated to the aircraft. ### Claim 9 (depends on 1) A system for carrying out the method of claim 1, comprising the aircraft and the at least three cellular base stations, the aircraft carries an identifier equipment equipped with a transmitter/receiver antenna, wherein the identifier equipment is made up of the switched on on-board device, and the switched on on-board device is configured for identifying the airspace user and for real-time forwarding a distance of the aircraft from the at least three cellular base stations by the observed time difference of the arrival data; the switched on on-board device is connected through the cellular network to the location based server and is equipped with the code card and a modem, wherein the location based server is, via the air traffic management system, connected to the at least one database accessible to the multiple airspace users; the location based server and/or the air traffic management system is configured to collect and compare position data yielded from the observed time difference of the arrival data and the at least two further positioning data, the at least two further positioning data is any of the satellite positioning data, the surveillance data and the flight plan data; the location based server and/or the air traffic management system is configured to determine the validated position vector data; and the validated position vector data is configured to be sent to the aircraft. ### Claim 10 (depends on 9) The system according to claim 9, wherein the switched on on-board device is equipped with a display for displaying the validated position vector data. ### Claim 11 (depends on 10) The system according to claim 10, wherein the code card comprises a Read Only Memory (ROM) and/or a Random Access Memory (RAM) used generally in cellular communications, the ROM and/or the RANI having an individual identifier assigned to the airspace user. ### Claim 12 (depends on 10) The system according to claim 10, wherein the cellular network is a Long-Term Evolution (LTE) network and the code card is a Subscriber Identity Module (SIM) card installed into the modem, and a Universal Subscriber Identity Module (USIM) card is used as the SIM card. ### Claim 13 (depends on 10) The system according to claim 10, the switched on on-board device is equipped with a Global Navigation Satellite System (GNSS), the GNSS is connected to a satellite system through a wireless connection. ### Claim 14 (depends on 9) The system according to claim 9, wherein the code card comprises a Read Only Memory (ROM) and/or a Random Access Memory (RAM) used generally in cellular communications, the ROM and/or the RANI having an individual identifier assigned to the airspace user. ### Claim 15 (depends on 14) The system according to claim 14, wherein the cellular network is a Long-Term Evolution (LTE) network and the code card is a Subscriber Identity Module (SIM) card installed into the modem, and a Universal Subscriber Identity Module (USIM) card is used as the SIM card. ### Claim 16 (depends on 14) The system according to claim 14, the switched on on-board device is equipped with a Global Navigation Satellite System (GNSS), the GNSS is connected to a satellite system through a wireless connection. ### Claim 17 (depends on 9) The system according to claim 9, wherein the cellular network is a Long-Term Evolution (LTE) network and the code card is a Subscriber Identity Module (SIM) card installed into the modem, and a Universal Subscriber Identity Module (USIM) card is used as the SIM card. ### Claim 18 (depends on 17) The system according to claim 17, the switched on on-board device is equipped with a Global Navigation Satellite System (GNSS), the GNSS is connected to a satellite system through a wireless connection. ### Claim 19 (depends on 9) The system according to claim 9, the switched on on-board device is equipped with a Global Navigation Satellite System (GNSS), the GNSS is connected to a satellite system through a wireless connection.